Home / 1,268,400.40-1,900,605.06-980,915.81

Finding the Fourth Proportional to 1,268,400.40, 1,900,605.06 and 980,915.81

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Solution

The fourth proportional to 1,268,400.40, 1,900,605.06 and 980,915.81 is: 1,469,830.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,268,400.40 : 1,900,605.06 = 980,915.81 : x
  2. Step 2: Convert to fraction form
    1,268,400.40/1,900,605.06 = 980,915.81/x
  3. Step 3: Cross multiply
    1,268,400.40x = 1,900,605.06 × 980,915.81
  4. Step 4: Simplify right side
    1,268,400.40x = 1,864,333,542,416.97
  5. Step 5: Solve for x
    x = 1,864,333,542,416.97/1,268,400.40
  6. Step 6: Final answer
    x = 1,469,830.46

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.